deploy: fix missing format

Author: pietroalbini

ci/sync-dist.py

@@ -145,7 +145,8 @@ def run_s3cmd(command):
 if command == "local-to-prod":
     run_s3cmd("aws s3 cp ./local-rustup/rustup-init.sh s3://{}/rustup/rustup-init.sh"
               .format(s3_bucket))
-    run_s3cmd("aws s3 cp ./local-rustup/rustup-init.sh s3://{}/rustup.sh")
+    run_s3cmd("aws s3 cp ./local-rustup/rustup-init.sh s3://{}/rustup.sh"
+              .format(s3_bucket))
     run_s3cmd("aws s3 cp --recursive ./local-rustup/www/ s3://{}/rustup/www/"
               .format(s3_bucket))
     if live_run: